import CryptoJS from 'crypto-js'

const tool = {}


/*sessionStorage*/
tool.session = {
	set(table, settings) {
		var _set = JSON.stringify(settings)
		return sessionStorage.setItem(table, _set)
	},
	get(table) {
		var data = sessionStorage.getItem(table)
		try {
			data = JSON.parse(data)
		} catch (err) {
			return null
		}
		return data
	},
	remove(table) {
		return sessionStorage.removeItem(table)
	},
	clear() {
		return sessionStorage.clear()
	}
}

/*cookie*/
tool.cookie = {
	set(name, value, config = {}) {
		var cfg = {
			expires: null,
			path: null,
			domain: null,
			secure: false,
			httpOnly: false,
			...config
		}
		var cookieStr = `${name}=${escape(value)}`
		if (cfg.expires) {
			var exp = new Date()
			exp.setTime(exp.getTime() + parseInt(cfg.expires) * 1000)
			cookieStr += `;expires=${exp.toGMTString()}`
		}
		if (cfg.path) {
			cookieStr += `;path=${cfg.path}`
		}
		if (cfg.domain) {
			cookieStr += `;domain=${cfg.domain}`
		}
		document.cookie = cookieStr
	},
	get(name) {
		var arr = document.cookie.match(new RegExp('(^| )' + name + '=([^;]*)(;|$)'))
		if (arr !== null) {
			return unescape(arr[2])
		} else {
			return null
		}
	},
	remove(name) {
		var exp = new Date()
		exp.setTime(exp.getTime() - 1)
		document.cookie = `${name}=;expires=${exp.toGMTString()}`
	}
}

/* Fullscreen */
tool.screen = function (element) {
	var isFull = !!(
		document.webkitIsFullScreen ||
		document.mozFullScreen ||
		document.msFullscreenElement ||
		document.fullscreenElement
	)
	if (isFull) {
		if (document.exitFullscreen) {
			document.exitFullscreen()
		} else if (document.msExitFullscreen) {
			document.msExitFullscreen()
		} else if (document.mozCancelFullScreen) {
			document.mozCancelFullScreen()
		} else if (document.webkitExitFullscreen) {
			document.webkitExitFullscreen()
		}
	} else {
		if (element.requestFullscreen) {
			element.requestFullscreen()
		} else if (element.msRequestFullscreen) {
			element.msRequestFullscreen()
		} else if (element.mozRequestFullScreen) {
			element.mozRequestFullScreen()
		} else if (element.webkitRequestFullscreen) {
			element.webkitRequestFullscreen()
		}
	}
}

/* 复制对象 */
tool.objCopy = function (obj) {
	return JSON.parse(JSON.stringify(obj))
}

/* 日期格式化 */
tool.dateFormat = function (date, fmt = 'yyyy-MM-dd hh:mm:ss') {
	date = new Date(date)
	var o = {
		'M+': date.getMonth() + 1, //月份
		'd+': date.getDate(), //日
		'h+': date.getHours(), //小时
		'm+': date.getMinutes(), //分
		's+': date.getSeconds(), //秒
		'q+': Math.floor((date.getMonth() + 3) / 3), //季度
		S: date.getMilliseconds() //毫秒
	}
	if (/(y+)/.test(fmt)) {
		fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))
	}
	for (var k in o) {
		if (new RegExp('(' + k + ')').test(fmt)) {
			fmt = fmt.replace(RegExp.$1, RegExp.$1.length === 1 ? o[k] : ('00' + o[k]).substr(('' + o[k]).length))
		}
	}
	return fmt
}

/* 千分符 */
tool.groupSeparator = function (num) {
	num = num + ''
	if (!num.includes('.')) {
		num += '.'
	}
	return num
		.replace(/(\d)(?=(\d{3})+\.)/g, function ($0, $1) {
			return $1 + ','
		})
		.replace(/\.$/, '')
}
/* 数据格式化 百分比 */
tool.floatToPercentage = function (num) {
	return (num * 100).toFixed(2) + '%'
}

/* 常用加解密 */
tool.crypto = {
	//MD5加密
	MD5(data) {
		return CryptoJS.MD5(data).toString()
	},
	//BASE64加解密
	BASE64: {
		encrypt(data) {
			return CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(data))
		},
		decrypt(cipher) {
			return CryptoJS.enc.Base64.parse(cipher).toString(CryptoJS.enc.Utf8)
		}
	},
	//AES加解密
	AES: {
		encrypt(data, secretKey, config = {}) {
			if (secretKey.length % 8 !== 0) {
				console.warn('[error]: 秘钥长度需为8的倍数，否则解密将会失败。')
			}
			const result = CryptoJS.AES.encrypt(data, CryptoJS.enc.Utf8.parse(secretKey), {
				iv: CryptoJS.enc.Utf8.parse(config.iv || ''),
				mode: CryptoJS.mode[config.mode || 'ECB'],
				padding: CryptoJS.pad[config.padding || 'Pkcs7']
			})
			return result.toString()
		},
		decrypt(cipher, secretKey, config = {}) {
			const result = CryptoJS.AES.decrypt(cipher, CryptoJS.enc.Utf8.parse(secretKey), {
				iv: CryptoJS.enc.Utf8.parse(config.iv || ''),
				mode: CryptoJS.mode[config.mode || 'ECB'],
				padding: CryptoJS.pad[config.padding || 'Pkcs7']
			})
			return CryptoJS.enc.Utf8.stringify(result)
		}
	}
}

export default tool
